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Viewing 15 posts - 76 through 90 (of 253 total)
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  • 3rd August 2004 at 09:15 #35236
    Faisal
    Guest

    Hello All

    Is there any place on the web where i can find technical conversion tables for eg watts to dbm and the terminologies used in gsm communications

    Thanks

    4th August 2004 at 08:43 #35237
    Saikat Sarkar
    Guest

    Hi,

    I want to know about the Working Procedure of SIEMENS BTS 240/240XL

    4th August 2004 at 09:09 #35238
    hame
    Guest

    Hi everybody,
    How can I calculate availability (%)in the radio interface of GSM network from the performance aspect.
    Than You

    10th August 2004 at 07:45 #35239
    Dharmendra
    Guest

    Please tell me what is GSM anteena and how it works, what technology they are used.

    11th August 2004 at 05:10 #35240
    JCD
    Guest

    “Please tell me what is GSM anteena and how it works, what technology they are used.”

    To be honest I don’t know what you mean… but any mobile telecom antenna is pretty much alike.. there are two types, Omni and Directional.. both uses Air Interface.

    12th August 2004 at 07:05 #35241
    raj
    Guest

    how many TRU can one E1 accomodate under different concentrations

    12th August 2004 at 09:14 #35242
    S.Vijay
    Guest

    Dear Raj,

    Can you explain a bit about Concentartions used in ERICSSON…

    Rgds

    scorplund1976@yahoo.com

    13th August 2004 at 12:29 #35243
    atul shukla
    Guest

    i wnat to know hardware description of RBS 2206 ericsson BTS n knowledge of CDU, TRu.

    13th August 2004 at 14:34 #35244
    vijayaraj
    Guest

    Hai vijay&raj,

    Three types of LAPD configuring methodology used while using a single E1 in ERICSSON.

    1.LAPD Concentration.
    2.LAPD unconcentration.
    3.LAPD Multiplexing.

    In LAPD concentration 13 TRU’s can be used with a single E1.
    In LAPD unconcentration 10 TRU’s can be used.
    And in LAPD Multiplexing 15 TRU’s can be used.

    14th August 2004 at 10:26 #35245
    raj
    Guest

    thanks to anonomous helper

    14th August 2004 at 10:27 #35246
    raj
    Guest

    BSS : thanks anonymous helper

    18th August 2004 at 07:51 #35247
    Daniel
    Guest

    hi, vijayaraj
    ———————————
    1.LAPD Concentration.
    2.LAPD unconcentration.
    3.LAPD Multiplexing.

    In LAPD concentration 13 TRU’s can be used with a single E1.
    In LAPD unconcentration 10 TRU’s can be used.
    And in LAPD Multiplexing 15 TRU’s can be used.
    ———————————
    would you like explain more about LAPD?

    1.LAPD Concentration: 13*2+(13 div 4) = 26+4 = 30 < 31(E1 TimeSlot) 2.LAPD unconcentration: 10*3 = 30 < 31(E1 TimeSlot) 3.LAPD Multiplexing: 15*2= 30 < 31(E1 TimeSlot) Am i right? In method 3, how is the LAPD signalling transfered to BSC?

    18th August 2004 at 08:12 #35248
    Daniel
    Guest

    and you know, vijayaraj

    there are two kind of LAPD Multiplex, MPLEX16 and MPLEX32, what are the differences?

    19th August 2004 at 01:00 #35249
    vijayaraj
    Guest

    Hai daniel,
    its not 15*2.It should be 15*1.75=26.25.Others for TRU signalling.

    21st August 2004 at 14:01 #35250
    waleed
    Guest

    hi fisal download good free engineering calclator from this website:
    http://www.engnetglobal.com

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